>> the date, april 15th, tax day, patriots day, the marathon, please be individual dots that investigators will think about. they will be careful to, the media, i include myself in that, now, we want to connect those dots very quickly and say, look. it was pats' day. it might be extremists. these are all individual dots that, at some point, will make sense. but right now, the federal bureau of investigation, the boston police, others in the u.s. government, are really in the process of collecting all of these dots. the date, potential groups that might have made threats before, the forensic information. looking at overseas intelligence. and it's really only after all of those dots are collected, that you very slowly and methodically start to connect them slowly. so, it may very well be that april 15th had some consequence here. it could turn out it had nothing to do with it. this was simply the boston marathon or simply an attack of opportunity. a factor, do we know if it's positive or points in one point or another? not less than 24 hours later. no, we really don't. >> you talk about the